Parametric Equation Question

[MathsQuestionAsker]

Not sure how to approach Q11i

 

[BigBeachBanana]

\(\displaystyle x=\tan(\theta)=\frac{\sin(\theta)}{\cos(\theta)}=\frac{\sin(\theta)}{y}\)

Find the value of [imath]\sin(\theta)[/imath] in terms of y.
Tip: Draw a triangle.

 

[Deleted member 4993]

Not sure how to approach Q11i
View attachment 32615

Another approach:

sec²(Θ) - tan²(Θ) = 1